Harrow.



G. G. JOHNERSON.

HARROW.

APPLIGATIONPILBD JULY 12, 1909.

C. G. JOHNERSON..

HARROW.

APPLICATION FILED JULY 12, 1909.

A Patented A111119, 1910.

2 SHEETS-SHEET 2.

UNITED` STATES PATENT OFFTQE.

CARL Gr. JOHNERSON, 0F MADDOCK, NORTH DAKOTA.

HARROW.

To all whom fit may concern:

Be it known that I, CARL Gr. JoHNERsoN, a subject of the King of Norway,residing at Maddock, in the county of Benson and State of North Dakota,have invented certain new and useful Improvements in Harrows, of whichthe following is a specification.

The present invention consists of a riding attachment for harrows andembodies primarily special means forming the essential feature of theinvention whereby any one or more sections of a harrow'may be elevatedin order to disengage the teeth thereof from any obstacles or foreignmatter that may have become clogged therein or otherwise engagedtherewith.

For a full understanding of the invention, reference is to be had to thefollowing detail description and to the accompanying drawings, in which-Figure 1 is a top plan view showing the invention in operative relationto a common type of harrow embodying a plurality of sections mounted forindependent movenie-nt; Fig. 2 is a side elevation showing the partsarranged.substantially as in Fig. 1, and Fig. 3 is a detail sectionalview of one of the clutch devices adapted for operation by the foot toelevate the rear end of a section of the harrow for the purpose beforementioned.

Throughout the following detail desc-ription and on the several figuresof the drawings similar parts are referred to by like referencecharacters.

Referring particularly to the drawings and specifically describing thedetails of construction and the advantages of the present invention itwill be observed that the harrow illustrated is of the common typeembodying a transverse draft beam A and a plurality of harrow sectionsprovided with suitable teeth and designated B, C, D, E, and F. Theseveral sections of the harrow are connected in a flexible manner withthe beam A. The present invention involves the peculiar means employedfor raising the rear ends of the harrow sections.

Located in rear of the harrow is a wheeled frame 1, the wheels of whichare denoted 2. A suitable seat 3 is mounted on the rear portion of theframe l to support a driver, and on the upper front portion of the frameis mounted a transverse shaft 4 having on one end thereof a sprocketwheel 5 about which passes a chain 6 which also passes about an-Speccaton of Letters Patent.

Application filed Ju1y12, 1909.

Patented Apr. 19, 1910.

serial No. 507,152.

other sprocket wheel 7 on a wheel 2 of the frame 1, so that the shaft 4is driven constantly from the said wheel 2 while the implement isadvanced over a field.

Mounted on the shaft 4 are a plurality of clutch devices operable byfoot levers 8, one of which is provided for each clutch device. Eachclutch device is connected for operation of a cable or rope 9 whichextends over a pulley 10 on the front portion of the frame 1 and thenceto a point of connection with the rear end of a harrow section. In otherwords, the several harrow sections B, C, D, E, and F are attached toropes 9 which are connected by snap hooks to the rear ends of saidsections, and which ropes lead to pulley wheels or winding drums 11 onthe shaft 4, so that the said connections or ropes 9 may be wound aboutthe drums 11 in order to raise the rear ends of the sections of theharrow.

The winding drums 11 are loosely mounted on the shaft 4 andl the clutchdevices before mentioned are provided one for each winding drum. Sinceall of the clutch devices are the same in construction one only will bedescribed. As shown clearly in Fig. 3 the clutch device referred toconsists of a somewhat U-shaped frame 12 having the sides 12 and 12. Thefoot lever 8 adjacent to the frame 12 for operation thereof is ofbellcrank form and is pivoted to a cross bar 13 in rear of the shaft 4.The lower arm of the lever 8 is connected with a transverse pin 14 onthe rear end of the frame 12. The winding drum 11 operated by the frame12 is loose on the shaft 4 and between the sides of said frame, saiddrum having recesses 11 in a side thereof in which are adapted to engagethe extremities of clutch arms 15 projecting from a clutch member 16which is secured to the shaft 4 for rotation therewith. A coiled spring17 interposed between the drum 11 and member 16 normally holds the parts16 and 11 out of coperation. A flexible connection or rope 18 passesfrom a point of connection with the side 12 of the frame 12 about awheel 19 on the side 12 and is connected to a plate 20 adjacent to saidside 12. The connection 18 is normally taut so that when the foot lever8 is depressed forcing the frame 12 forwardly a pull is exerted on theconnection 18 moving the side 12 of the frame toward the side 12 andthus engaging the drum 11 with the arms 15 of the clutch member 1G. Thisconnects the shaft 4 for rotation of the drum l1 and winds up theconnection 9 of said drum elevating the section of the harrow attachedto said rope 9 at the rear end of said section. As the rope 9 windsabout the drinn ll a projection 2l in the length of said rope strikes anextension 12a of the side l2 of the frame l2, and this action forces theframe l2 rearwardly relieving the tension on the rope 18 and permitting`the sides of the frame to move into their normal more remote positions,and separation of the drum and clutch arms l5. As soon as the clutchmember 1G is disengaged from the drum 1l the latter will be free torotate so as to permit the rope 9 to unwind therefrom and lower thereai' end of the section of the harrow which has been previouslyelevated.

The forward and rearward movement of the frame l2 on the shaft 4e ispermitted by providing in the opposite sides of the frame. slots 12bthrough which the shaft at passes.

From the foregoing it will be apparent that any selected section of theharrow may be elevated at its rear end at the will of the operator andwill be automatically lowered in the operation of the invention.

Having thus described the inventiomwhat is claimed as new is:

l. In combination, a toothed harrow section, and means for raising andlowering said section comprising a wheeled frame, a constantly drivenshaft thereon, a winding drum on said shaft, a connection between saiddrum and the harrow section, and means for controlling rotation of thedrinn with respect to the shaft to cause winding and unwinding of theconnection between said drum and the harrow section.

E2. In combination, a harrow section, a supw porting frame, a windingdrinn on said frame, a cable connecting said drinn with the section,means for turning the drinn to wind up the cable and elevate the harrow1 section, and means for automatically lowering the harrow section afterit has been raised a certain distance.

3. In combination, a harrow comprising sections, a wheeled frame, aconstantly driven shaft on the frame, a plurality of drums loose on saidshaft, cables connected with the hari'ow sections, and each connectedwith a drum to be wound thereon, means for connecting the drums forrotation with the shaft to elevate the harrow sect-ions, and automaticmeans for restoring the drinn to loose non-rotative connection withrespect to the shaft.

4. In combination, a harrow consisting of a plurality of sections, awheeled frame connected with the harrow, a constantly driven shaftmounted on the frame, a plurality of drums loose on said shaft, cablesconnecting the drinns with the hai-row sections and adapted to windabout the drums, means for independently connecting the drums to theshaft for rotation therewith, and automatic means for disconnecting thedrinn from rotation with said shaft.

In combination, a harrow comprising sections, a wheeled frame connectedwith the liarrow, a drive shaft on said frame, winding drums on saidshaft, cables connected with the harrow sections and adapted to wind onsaid drums, and a clutch device for each diiiin comprising a frameslidable on the shaft and having spaced sides, one side of the frameengaging the adjacent drum, a ltension connection between saidframe-side, and the shaft, a foot lever for moving the frame in onedirection whereby the side above mentioned moves the 4adjacent drinnlongitudinally on its shaft, a clutch member rotatable with the shaft,and engagable with the drinn on niovenient of the latter lengthwise ofthe shaft, and means for returning the frame to its normal positioncontrolled by winding of the cable on the drinn.

In testimony whereof I aflix my signature in presence of two witnesses.

CARL G. ItflIINEI-SDN. IVitnesses:

QI. F. HEGGE, A. M. Sinclair).

